Air-pump.



A. F. KRAUSE.

AIR PUMP.

APPLICATION FILED APR.18,1910.

Patented Dec. 8, 1914 5 BHEETS-BIIEET 1.

Va-awn egs A. F. KRAUSE.

AIR PUMP.

uruouxox nun APB.16, 1910.

1, 1 1 9,834. Patented Dec. 8, 1914 THE NORRIS PEYERS m. FNOTO-LITMO.WASHING Ii!"v D. C.

A. F. KRAUSE.

AIR PUMP. APPLICATION FILED APR.1 6, 1910.

Patented Dec. 8, 1914.

5 SHEETS-SHEET 3.

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'"l. NORRIS PEYERS ca. PHOTULIYHOH WASHING IDN D. C

A. P. KRAUSB.

AIR PUMP.

APPLIUATION FILED APR.16, 1910.

Patented Dec. 8, 1914.

5 SHEETS-SHEET 4.

HIE nan-ms PEYERS C0 PHOTO-undo WASNINIHUN. n C

A. F. KRAUSE.

AIR PUMP.

APPLIOATIOH FILED APR. 16, 1910.

Patented Dec. 8, 1914.

. r m w. r AM; I W I W 1m ITE STATFE PATENT OFFICE.

ALBERT F. KRAUSEOF BUFFALO, NEW YORK, IASSIGNOR OF ONE-HALF TO CHARLESC.

LADD, OF'BUFFALO, NEW YORK.

AIR-PUMP.

Patented Dec. 8, 1914.

Application filed April 16, 1910. Serial No. 555,961.

expensive apparatus of this kind.

In the accompanylng drawings: Figure l is a side elevation of the pumpplaced inia' sink and connected with an ordinary iaucet.

Fig. 2 is a top plan view thereof. Fig. 3 is a sectional elevation ofthe device, on an enlarged scale. Fig. i is a horizontal section on linel 4:, Fig. 3. Figs. 5 and 6 are vertical sections on the correspondinglynumbered lines in Fig. 3.. Fig. 7 is a vert1 cal section of the strainerand adjacent parts on line Z7, Fig. 1, on an enlarged scale.

Fig. 8 is a vertical section at right angles to F1g..7. Figs. 9 and 10are horizontal sections on the correspondingly-numbered lines in Fig. 3.

Similar letters of reference indicate corresponding parts throughout theseveral views. a a

A indicates a water-motor or wheel of any suitable construction, thatshown in the drawings being a turbine of the well known buckettype andarranged horizontally in an inclosing case A. The latter has legs 15 bywhich the apparatus is supported in a sink G or other, suitablereceptacle connected with a drain or sewer.

(Z is the tangential nozzle passing through the side of the motor-casefor directing a jet of water against the buckets of the wheel, and (Z isa hose or other suitable conduit for connecting said nozzle with afaucet D or other source of water under pressure. The shaft 0 of thewater wheel extends upwardlythrough the wheel case and is journaled atits upper end in a suitable bearing 6 while its lower end is supportedin a step bearinge carried by a horizontal air discharge conduit Eextending centrally through the motor-case.

F, F indicate a pair of exhaust devices or suction pumps arranged onopposite sides of the shaft 6 and driven by the same. These pumps may beof any suitable construction Its object is a the provision of a simple,compact and 111- but are preferably of the diaphragm type shown in thedrawings, each consisting of an upright dished head or plate and adiaphragm f of leather or other suitable flexible material covering theinner side of the plate and forming therewith an intermediate pumpchamber f The edge of this diaphragm is clamped to the inner face of theplate 7' bya ring f and screws 7, or other suitable fastening. of thepumps are actuated by rods pivoted at their outer ends to reinforcingplates 9 secured to the central portions of the diaphragms, and at theirinner ends to a clnnK c of the motor-shaft c, by which construction aduplex or double-acting pump is obtamed, As shown,the pumps aresupported upon and secured to the projecting end portions of the airdischarge conduit E.

9 In order to relieve the diaphragms .7

from the weight of the connecting rods 9 and attaching plates and avoiduneven stretching or distortion thereof, the

outer ends of said rods and the central portions of the diaphragms arepreferably carricd by horizontallyswinging supporting arms pivoted attheir inner ends to the diaphragms and at their outer ends to lugs orbrackets of the plates 7.

()n the outer. side of each plate 7' are located an upper inlet conduitl2, and a lower exhaust conduit 71., which conduits are separated by apartition if, as shown in Fig. 3. Each exhaust conduit h is connectedwith the adjacent pump-chamber by a port 2' con trolled by anoutwardly-opening valve 41 while the lower end of said conduit is connected with the air discharge tube E. The latter is provided centrallywith a depending delivery neck 70.

The lower portion of each inlet conduit It connects with thecorresponding pump chamber by a port Z controlled by an inwardly-openingvalve 2, while the upper end of said conduit is connected by a tube orpassage m with the bottom of a screenchamber M sin-mounting the tubes m.This chamber is tightly closed on all sides and contains a comparativelycoarse screen N adapted to intercept lint, hair, small pieces of paperand similar cleanings which if allowed to passthrough the cleaner intothe sink might clog its usual strainer c. In its preferred form, shownin the drawings, the screen N is cup-shaped and removably susfhediaphragms pended from an inwardly-extending flange or shoulder m of thechamber M against which the wired or flanged upper edge of the screen isclamped by a suction-connection or elbow 0, as shown in Figs. 1, 7 and8. Attached to this connection is the usual hose or flexible conduit P,the free end of which carries the customary nozzle, not shown, which isadapted to be passed over the carpet or other article to be cleaned.

The connection 0 may be removably secured to the top of the screenchamber by any suitable means, those shown in the drawings consisting ofa yoke 0 which engages under the shouldered upper end of the screenchamber, and a clamping or thumbscrew 0* which bears upon the connection0, thus firmly clamping it down upon the screen chamber and securing thescreen in place. Upon loosening this yoke, the connection 0 and thescreen N can be removed fromthe chamber for discharging accumulationsfrom the screen from time to time.

In the drawings, the air pumps are shown as having hinged 0r flapvalves, but spherical. or other suitable valves may obviously besubstituted for the same, if desired.

As shown, the upper bearing 6 of the motor shaft is carried by the innerends of the tubes m which latter are preferably depressed or inclinedtoward the bearing, in Order to lower the screen chamber M and renderthe apparatus more compact.

9 indicates a dust and air mixing tube or chamber arranged to receivethe spent water from the motor-wheel and the dust-laden air from thedischarge conduit E of the suction pumps, the neck is delivering thedust-laden air centrally into the top of the mixing chamber, so as tocommingle the dust with the water and discharge it into the sink orother receptacle and thence into the sewer. In the construction shown inthe drawings, the motor-case is provided with a funnelshaped downwardextension A which carries the mixing chamber 9, of which latter itpractically forms a continuation. The mixing chamber is open at itslower end, as seen in Fig. 3.

In order to more eifectually mix the dust with the water and prevent anyof it from reentering the apartment, the mixing chamber q is providedwith suitable means for retarding the escape of the dust-laden .air anddistributing and discharging the spent water through the mixing chamberin an annular or practically continuous sheet through which the streamof dust-laden air is compelled to pass one or more times, thusthoroughly wetting all of the dust and washing it into the sewer. Thepreferred devices shown in the drawings for this purpose are constructedas follows: r indicates a wall or dam surrounding the discharge-neck kand arranged in close proximity to the funnelshaped bottom A of themotor-case, to form an overflow pan which receives from the motor thespent water which latter overflows said dam, producing an annular sheetor water-curtain through which the incoming dust-laden air passesoutwardly. Below the dam r may be arranged additional overflow pans. Inthe construction shown, the second pan comprises a bottom-plate s and adam s; the third consists of a bottom plate 6 extending inwardly fromthe wall of the mixing chamber and having a central opening, adjacent tothe edge of which is a dam t while the last pan comprises a bottom plateu and a dam u Below the fourth pan is preferably a bafile-ring o.

In the use of the apparatus, upon admitting the motive liquid to themotor-case A, the motor-wheel is rapidly rotated, operating the airpumps and creating a suction current through the hose or conduit Pandthe usual cleaning nozzle carried by the The dust removed from thecarpet or other article is drawn through the screen N which latterintercepts any large particles liable to ClOg' the sink-strain, asheretofore described, while the dust-laden air is drawn through theinlet conduits m and h, and the pump chambers and discharged through thetube E and neck is into the mixing chamber Q where it repeatedlytraverses the sheet of water descending through the latter, thoroughlycommingling the dust with the water and finally draining it as alreadydescribed.

In order to permit the use of the apparatus as an air forcing pump orblower, if desired, the discharge conduit E- is provided with asupplemental outlet, preferably in the form of a capped screw nipple jto which a compressed air discharge hose or conduit may be attachedafter removing the cap, and a valve y is provided for closing the lowerend of the neck 70, as shown by dotted lines in Fig. 3, to cut off thedischarge of the air at that point and compel it to escape solelythrough the nipple j In the construction shown in the drawings, thevalve is carried by a screw threaded stem engaging a threaded opening inone of the overflow pans, the valve-stem passing through the bottom ofthe lowermost pan and terminating in a suitable handle convenient ofaccess from the outside of the dust and air mixing chamber.

lVhile I have herein shown a double acting suction pump, a singleacting-pump may be used if desired.

This improved cleaner, while effectually disposing of the dust withoutthe necessity of handling the same, also has the advan tages ofcompactness and portability, permitting its storage in a small space andrendering it especially desirable for household use where water-power isgenerally available. Its simple construction moreover, enables it to beput in service and used by persons unskilled in the use of machines,while its moderate cost of manufacture brings it within the reach ofordinary households.

I claim as my invention:

1. In a vacuum cleaner, the combination of a Water-motor having a crankshaft, suction umps arranged on opposite sides of said shaft andoperatively connected therewith, an air discharge conduit connected withthe pumps, and a transverse suction conduit connected with the inlets ofsaid pumps and carrying the upper bearing of the motor-shaft.

2. In a vacuum cleaner, the combination of a water-motor having a crankshaft, suction pumps arranged on opposite sides of said shaft and:operatively connected therewith, an air discharge conduit arrangedtransversely below the motor and carrying the lower bearing of itsshaft, and a transverse suction conduit connected with the upper ends ofthe pumps and carrying the upper bearing of said shaft.

3. In a vacuum cleaner, the combination of a water-motor, an exhaustdevice operated by the motor and having inlet and discharge conduits,said discharge conduit having a main outlet and a supplemental out let,and means for closing one or the other of said outlets.

4:. In a vacuum cleaner, the combination of a water-motor, an exhaustdevice operated by the motor and having inlet and discharge conduits,said discharge conduit having a main outlet and a supplemental outlet, acap for closing said supplemental outlet, and a valve for closing saidmain outlet.

Witness my hand this 15th day of April,

ALBERT F. KRAUSE. Witnesses C. F. GEYER, E. M. GRAHAM.

Copies of this patentmay be obtained for five cents each, by addressingthe f Commissioner of Patents,

Washington, D. G.

